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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define internal energy in your own words.
💡 Hint: Consider all the forms of energy present in a system.
Question 2
Easy
In the first law of thermodynamics, what does the term 'isolated system' mean?
💡 Hint: Think about what happens to the energy in such systems.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does the internal energy of a system represent?
- Only kinetic energy
- Only potential energy
- Total energy contained within the system
💡 Hint: Think about what makes up the energy of a system.
Question 2
True or False: In an isolated system, energy can be added or removed.
- True
- False
💡 Hint: Consider what isolated means in context.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A closed system absorbs 20 kJ of heat and does 5 kJ of work. What is the change in internal energy?
💡 Hint: Use the basic formula we discussed earlier.
Question 2
Explain how energy conservation plays out in a chemical reaction in real-world applications like engines.
💡 Hint: Link practical applications like car engines to our discussions on energy.
Challenge and get performance evaluation